<template>
  <view class="my-settle-container">
    <!-- 全选区域 -->
    <label class="radio" @click="changeAllState">
      <radio color="#C00000" :checked="isFullCheck" />
      <text>全选</text>
    </label>
    <!-- 合计区域 -->
    <view class="amount-box">
      合计：
      <text class="amount">￥{{ checkedGoodsAmount }}</text>
    </view>
    <!-- 结算按钮 -->
    <view class="btn-settle">结算({{ checkedCount }})</view>
  </view>
</template>

<script>
import { mapMutations, mapGetters } from 'vuex';
export default {
  name: 'my-settle',
  data() {
    return {};
  },
  computed: {
    ...mapGetters('m_cart', ['checkedCount', 'total', 'checkedGoodsAmount']), // 将 total 映射到当前组件中
    //  是否全选
    isFullCheck() {
      return this.total === this.checkedCount;
    }
  },
  methods: {
    ...mapMutations('m_cart', ['updateAllGoodsState']), // 使用 mapMutations 辅助函数，把 m_cart 模块提供的 updateAllGoodsState 方法映射到当前组件中使用
    changeAllState() {
      // 修改购物车中所有商品的选中状态
      this.updateAllGoodsState(!this.isFullCheck); // !this.isFullCheck 表示：当前全选按钮的状态取反之后，就是最新的勾选状态
    }
  }
};
</script>

<style lang="scss">
.my-settle-container {
  // 固定底部定位
  position: fixed;
  bottom: 0;
  left: 0;
  // 设置宽高和背景色
  width: 100%;
  height: 50px;
  background-color: lightcyan;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-left: 5px;
  font-size: 14px;

  .radio {
    display: flex;
    align-items: center;
  }

  .amount {
    color: #c00000;
  }

  .btn-settle {
    height: 50px;
    min-width: 100px;
    background-color: #c00000;
    color: white;
    line-height: 50px;
    text-align: center;
    padding: 0 8px;
  }
}
</style>
